Exhaust gas distribution device and heat exchange system comprising same

Abstract

An exhaust gas distribution device, provided in the present invention, comprises: a lower end distribution part (100) comprising a plurality of guide plates (110) which are radially arranged so as to uniformly distribute exhaust gas supplied from the lower end portion and guide the exhaust gas in a specific direction; an upper end diffuser part (200) positioned on the lower end distribution part (100) and comprising a link rod (230) which is connected to the lower end distribution part (100), a diffuser body part (220), and guide vanes (210) which are radially arranged on the bottom surface of the diffuser body part (220); and a housing part (300) having the lower end distribution part (100) and the upper end diffuser part (200) seated therein.

Description

Exhaust gas distribution device and heat exchange system including the same

[0001] The present invention relates to an exhaust gas distribution device and a heat exchange module including the same. More specifically, the present invention relates to an exhaust gas distribution device capable of effectively performing heat exchange of non-uniform exhaust gas and a heat exchange system including the same.

[0002] Utilizing the heat generated from exhaust gas from power generation facilities such as fuel cells has recently become increasingly popular. This approach helps increase energy efficiency and reduce environmental impact.

[0003] However, due to the nature of these gas emissions, the flue gas is unevenly distributed within the heat exchanger, and this uneven heating drastically reduces heat exchange efficiency. This uneven distribution of the flue gas within the heat exchanger results in high temperatures concentrated in certain areas and low temperatures in other areas.

[0004] These temperature imbalances impede even heating of the heat medium, reducing heat exchange efficiency. For example, some heat exchange areas may overheat, potentially causing physical damage to the heat medium, while other areas may not receive sufficient heat transfer, reducing the overall system's thermal efficiency.

[0005] Consequently, when it is desired to utilize the heat of the exhaust gas, a method capable of effectively exchanging heat with such a heat exchange device is required, and when it is desired to use efficient heat energy, a device that effectively evenly distributes the heat exchange of such exhaust gas is required.

[0006] The problem to be solved by the present invention is to provide an exhaust gas distribution device capable of maximizing heat exchange efficiency by bringing uniform exhaust gas into contact with a heat exchanger, and a heat exchange system including the same.

[0007] The exhaust gas distribution device provided in the present invention includes a lower distribution unit (100) including a plurality of guide plates (110) that are radially arranged and uniformly distribute exhaust gas supplied from a lower portion and guide it in a specific direction, a link rod (230) positioned on the lower distribution unit (100) and connected to the lower distribution unit (100), an upper diffuser unit (200) including a diffuser body unit (220) and guide vanes (210) that are radially arranged on the lower surface of the diffuser body unit (220), and a housing unit (300) on which the lower distribution unit (100) and the upper diffuser unit (200) are mounted.

[0008] In one embodiment, the guide plate (110) may be characterized by including a main plate (111) and a camber plate (112) integrally formed on the top of the main plate (111).

[0009] In one embodiment, the lower distribution unit (100) may further include a hub unit (120) that mechanically connects to and supports the link rod (230) of the upper diffuser unit (200).

[0010] In one embodiment, the link load (230) may be characterized by having a position that is adjusted from the hub portion (120) so that the fixed interval between the lower distribution portion (100) and the upper diffuser portion (200) is adjusted.

[0011] In one embodiment, the guide plate (110) may be characterized by its width becoming narrower as it goes upward.

[0012] In one embodiment, the guide plate (110) may be cut out according to the shape of the upper diffuser portion (200) to secure a path when the exhaust gas rises.

[0013] In one embodiment, the guide plate (110) and the guide vane (210) may be characterized by being included in the same number and arranged alternately at the same angular interval when viewed on a plane.

[0014] In one embodiment, the guide vane (210) may be characterized by a camber plate (112) that is bent in an inclined direction from the center to form a curve.

[0015] In one embodiment, the housing portion (300) may be characterized by including a cylindrical housing body portion (310) and a flared lip (320) positioned at the upper end of the housing body portion (310) and having an outwardly curved and widened shape that guides the flow of exhaust gas in a direction of expanding the flow of exhaust gas.

[0016] In one embodiment, the housing portion (300) may further be characterized by including a flange (330) protruding from a side surface of the housing body portion (310).

[0017] The heat exchange system provided in the present invention includes a fuel cell module (SOFC) that discharges exhaust gas by reaction during power generation, an exhaust gas concentration pipe (2100) that concentrates exhaust gas through an exhaust gas discharge pipe (2200) connected to the fuel cell module (SOFC), an exhaust gas distribution device (1000) located at the upper portion of the exhaust gas concentration pipe (2100) to distribute exhaust gas and deliver it upward, a heat exchange device (3100) located at the upper portion of the exhaust gas distribution device (1000) to contact the exhaust gas and exchange heat, and a lower distribution unit (100) including a plurality of guide plates (110) that are radially arranged and uniformly distribute exhaust gas supplied from the lower portion and guide it in a specific direction, a link rod (230) located on the lower distribution unit (100) and connected to the lower distribution unit (100), an upper diffuser unit (200) including a diffuser body unit (220) and guide vanes (210) that are radially arranged on the lower surface of the diffuser body unit (220), a lower It is characterized by including a housing part (300) for mounting a distribution part (100) and an upper diffuser part (200).

[0018] In one embodiment, it may further include a condensate discharge unit (2300) connected to the exhaust gas concentration pipe (2100) and discharging condensate generated from the exhaust gas.

[0019] In one embodiment, the upper part of the heat exchanger (3100) may be characterized by having an upper cap (3300).

[0020] In one embodiment, the guide plate (110) of the lower distribution unit (100) includes a main plate (111) and a camber plate (112) integrally formed on the upper side of the main plate (111), and the guide vane (210) may be characterized by being formed into a curve by bending the camber plate (112) in an inclined direction from the center.

[0021] In one embodiment, the lower distribution unit (100) further includes a hub unit (120) that is mechanically connected to and supports the link rod (230) of the upper diffuser unit (200), and the link rod (230) may be characterized in that the position at which it is fixed from the hub unit (120) is adjusted, thereby adjusting the fixed interval between the lower distribution unit (100) and the upper diffuser unit (200).

[0022] The exhaust gas distribution device provided in the present invention can evenly distribute exhaust gas supplied from the bottom to the heat exchanger by distributing exhaust gas through a lower distribution section and an upper diffuser section. This enables efficient heat exchange.

[0023] The guide plate of the lower distribution section evenly distributes exhaust gas, preventing it from being concentrated in a specific direction. Meanwhile, the camber plate located at the top of the guide plate forms a vortex to help uniformly distribute the exhaust gas. The guide vane of the upper diffuser section can help form a vortex in areas not covered by the camber plate (112).

[0024] Meanwhile, by combining the link rod and the hub, the height can be adjusted according to the distribution situation on site, so that the exhaust gas can be uniformly distributed to the heat exchanger, which is the final destination.

[0025] Therefore, this increases heat exchange efficiency by providing uniform exhaust gas, and enables a heat exchange system capable of recovering more efficient heat to be constructed.

[0026] Figures 1 and 2 are perspective views of an exhaust gas distribution device according to one embodiment of the present invention.

[0027] FIG. 3 is a drawing showing a lower distribution section of an exhaust gas distribution device according to the embodiment of FIG. 1.

[0028] FIG. 4 is a drawing showing the upper diffuser section of the exhaust gas distribution device according to the embodiment of FIG. 1.

[0029] FIG. 5 is a drawing showing a housing portion of an exhaust gas distribution device according to the embodiment of FIG. 1.

[0030] Fig. 6 is a cross-sectional view of an exhaust gas distribution device according to the embodiment of Fig. 1.

[0031] Figure 7 is a side view of a heat exchange system according to another embodiment of the present invention.

[0032] Fig. 8 is a plan view of a heat exchange system according to the embodiment of Fig. 7.

[0033] FIG. 9 is a side view of another direction of the heat exchange system according to the embodiment of FIG. 7.

[0034] Hereinafter, the present invention will be described in detail with reference to the attached drawings. Since the present invention can be modified in various ways and can take various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. This is not intended to limit the present invention to a specific disclosed form, but should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention. The terminology used herein is used only to describe specific embodiments. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, the terms "comprises" or "comprises" are intended to indicate the presence of a feature, step, component, or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, steps, components, or combinations thereof. Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains.

[0035]

[0036] Composition of exhaust gas distribution device

[0037] Figures 1 and 2 are perspective views of an exhaust gas distribution device according to one embodiment of the present invention.

[0038] Referring to FIGS. 1 and 2, the exhaust gas distribution device (1000) according to the present embodiment is largely composed of a lower distribution section (100), an upper diffuser section (200), and a housing section (300).

[0039] First, the lower distribution section (100) includes a plurality of guide plates (110). The guide plates (110) are arranged radially to uniformly distribute the exhaust gas and guide it in a specific direction. The guide plates (110) evenly distribute the exhaust gas supplied from the lower section so that the exhaust gas moves smoothly.

[0040] The upper diffuser section (200) is positioned above the lower distribution section (100) and includes a link rod (230), a diffuser body section (220), and a guide vane (210) connected to the lower distribution section (100). The guide vane (210) is radially arranged on the lower surface of the diffuser body section (220) to more evenly distribute exhaust gas. The link rod (230) connects and supports the lower distribution section (100) and the upper diffuser section (200).

[0041] The housing section (300) is a structure that mounts the lower distribution section (100) and the upper diffuser section (200). In addition, it allows the exhaust gas distribution device (1000) to be installed at a required location.

[0042] Through these three components, this device is responsible for uniformly distributing the flue gas supplied from the lower section to the upper section. Without this, the flue gas typically emits relatively high-temperature steam, resulting in heating only in certain areas. Heat transfer does not occur in areas not exposed to the flue gas, resulting in an uneven heat distribution throughout the entire system. This leads to critical inefficiencies in heat exchange.

[0043] The present invention evenly distributes exhaust gas to the upper portion through a two-stage distribution system, and is designed to particularly reflect the characteristics of exhaust gas generated from a fuel cell. The detailed configuration will be described in more detail below.

[0044]

[0045] Composition and function of the lower distribution unit (100)

[0046] FIG. 3 is a drawing showing a lower distribution section of an exhaust gas distribution device according to the embodiment of FIG. 1.

[0047] Referring to FIG. 3, the guide plate (110) of the lower distribution unit (100) includes a main plate (111) and a camber plate (112) formed integrally on the upper side thereof, and additionally includes a hub unit (120) that is mechanically connected to and supports the link rod (230) of the upper diffuser unit (200).

[0048] First, the drawing on the left shows a pair of guide plates (110) connected to a hub portion (120), and the configuration on the right shows a side view of one guide plate (110). Referring to the embodiments of FIGS. 1 and 2, it can be seen that the camber plate (112) is bent clockwise when viewed from the bottom.

[0049] The guide plate (110) guides the exhaust gas supplied from the bottom in a vertical direction with a uniform distribution. This is performed by the main plate (111). The upper end of the guide plate (110) includes a cambered plate (112) that forms a curved surface in one direction, which forms a vortex of the exhaust gas moving vertically from the bottom.

[0050] Meanwhile, looking at the shape of the guide plate (110), a portion of the center is formed in a cut-out shape. Except for the portion connected to the hub portion (120), the portion not connected to the hub portion (120) is formed in a shape that gradually narrows in width, and this can be seen as being formed by being cut out according to the shape of the upper diffuser portion (200). This helps to ensure a smooth flow of exhaust gas by securing an equal space flow path when the exhaust gas rises.

[0051] In this way, the lower distribution unit (100) first distributes the supplied exhaust gas evenly and then plays a role in forming a vortex.

[0052]

[0053] Configuration and function of the upper diffuser section (200)

[0054] FIG. 4 is a drawing showing the upper diffuser section of the exhaust gas distribution device according to the embodiment of FIG. 1.

[0055] Referring to FIG. 4, the upper diffuser part (200) includes a diffuser body part (220) and a guide vane (210) and a link rod (230) formed below the diffuser body part (220).

[0056] The diffuser body (220) serves to collect exhaust gas supplied from below toward the edge of the diffuser body (220). As will be described later, exhaust gas discharged along the edge circle of the upper diffuser body (200) is re-distributed based on the final discharge point, thereby enabling uniform distribution in the upper portion.

[0057] At this time, by forming more vortices, the exhaust gas can be distributed more evenly, which is handled by the guide vane (210). In addition to the shape shown in the drawing, it can have various shapes such as a blade shape or a gentle protrusion shape.

[0058] Meanwhile, these guide vanes (210) are formed into a curve by bending the camber plate (112) in an inclined direction from the center. Based on the embodiment of the drawing, the camber plate (112) is bent clockwise, and the guide vane (210) forms a curve that bends clockwise from the center to the periphery.

[0059] Meanwhile, it includes a link rod (230) connected to the hub (120) of the lower distribution unit (100), which can be fixed in various ways, such as a bolt structure. The gap between the upper diffuser unit (200) and the lower distribution unit (100) is one of the factors that determines how evenly the exhaust gas is distributed at the point where it reaches the heat exchanger, and therefore must be adjusted according to the on-site situation. Therefore, the present embodiment includes a structure in which the height of the upper diffuser unit (200) can be adjusted according to the situation of each site.

[0060] Meanwhile, in an additional embodiment, the guide plates (110) and guide vanes (210) may be included in the same number and may be alternately arranged at the same angular intervals when viewed from a plan view. Although they do not necessarily have to be included in the same number, it may be necessary to provide conditions for even distribution of exhaust gas by arranging them in the same number or density and for evenly receiving the influence of the guide plates (110) and guide vanes (210).

[0061]

[0062] Composition and function of the housing unit (300)

[0063] FIG. 5 is a drawing showing a housing portion of an exhaust gas distribution device according to the embodiment of FIG. 1.

[0064] Referring to FIG. 5, the housing portion (300) includes a cylindrical housing body portion (310) and a flared lip (320) positioned at the upper end thereof. The flared lip (320) is bent outward to guide the flow of exhaust gas in a direction that expands. This serves to help the exhaust gas to spread better at the point where it exits the exhaust gas distribution device (1000). By spreading more widely at the point of discharge, the exhaust gas can rise evenly and uniform heat exchange can be achieved, and the flared lip (320) can enhance this effect.

[0065] Meanwhile, for installation and functional advantages, the housing portion (300) may additionally include a flange (330) protruding from the side of the housing body portion (310). This may be used to facilitate placement of the exhaust gas distribution device (1000).

[0066]

[0067] Explanation of the operating principle of the exhaust gas distribution device

[0068] Fig. 6 is a cross-sectional view of an exhaust gas distribution device according to the embodiment of Fig. 1.

[0069] Referring to Fig. 6, the black arrows on the right side illustrate the flow of exhaust gas. First, exhaust gas passing through the lower distribution unit (100) is distributed in a uniform amount to each divided area, and then rises vertically for a certain period of time before forming a vortex at a certain angle by the camber plate (112) at the end.

[0070] At this time, some cut-out portions may not form vortices well, but additional vortices can be formed by the guide vanes (210) of the upper diffuser portion (200). This is why the cambered plate (112) and the guide vanes (210) must be bent so that they can form vortices in the same direction.

[0071] The elevated exhaust gas is discharged along the periphery of the upper diffuser section (200). At this time, the exhaust gas discharge speed and discharge angle are formed according to the gap formed by the flared lip (320) of the upper diffuser section (200) and the housing section (300), and this should be applied differently depending on the on-site situation. The exhaust gas discharge amount, discharge speed, and the diameter of the pipe involved until the exhaust gas arrives are affected. Therefore, in order to be able to adjust this on-site, the link rod (230) is designed to be able to adjust the fixed position from the hub section (120). Through this, the gap between the lower distribution section (100) and the upper diffuser section (200) or the gap between the upper diffuser section (200) and the housing section (300) can be adjusted and fixed.

[0072] The exhaust gas that has escaped between the upper diffuser section (200) and the flared lip (320) of the housing section (300) spreads radially after being discharged, which can induce even distribution of the exhaust gas. Even at this time, since the degree of distribution to the heat exchanger, which is the ultimate destination, can vary depending on the discharge angle, it is necessary to adjust the gap.

[0073]

[0074] Application of heat exchange system in exhaust gas distribution device

[0075] Fig. 7 is a side view of a heat exchange system according to another embodiment of the present invention. Fig. 8 is a plan view of a heat exchange system according to the embodiment of Fig. 7. Fig. 9 is a side view of a heat exchange system according to the embodiment of Fig. 7 in another direction.

[0076] First, the point where the exhaust gas distribution device (1000) is applied and the operation of the overall heat exchange system are described, and the overlapping parts in the parts described in FIGS. 1 to 6 above are replaced with the previous description.

[0077] Referring to FIGS. 7 to 9, a heat exchange system according to the present embodiment comprises a fuel cell module (SOFC), an exhaust gas discharge pipe (2200), an exhaust gas concentration pipe (2100), an exhaust gas distribution device (1000), and a heat exchange device (3100). Here, a condensate discharge unit (2300) and an upper cap (3300) may be additionally included.

[0078] A solid oxide fuel cell (SOFC) module emits exhaust gas through a reaction during power generation, which can be collected at the top. Typically, a single distribution system can be applied to a pair of fuel cells. As shown in FIG. 7, exhaust gas is guided from the left and right through exhaust gas discharge pipes (2200) to an exhaust gas concentration pipe (2100), then passes through an exhaust gas distribution device (1000) and undergoes heat exchange in a heat exchange device (3100).

[0079] Referring to FIG. 8, an exhaust gas discharge pipe (2200) is derived from a single fuel cell module (SOFC), and this is supplied to a heat exchanger (3100) through an exhaust gas concentration pipe and exhaust gas distribution device (not shown). The area indicated by a dotted line in the drawing is the area where the exhaust gas distribution device (1000) is placed.

[0080] The roles of each component of the heat exchange system will be explained with reference to Fig. 7. First, the exhaust gas discharge pipe (2200) includes a contraction / expansion pipe (2210) and a backflow prevention damper (2220). This ensures that the exhaust gas can be stably concentrated in the exhaust gas concentration pipe (2100) even in response to temperature changes or other changes in circumstances.

[0081] A condensate discharge unit (2300) connected to the exhaust gas concentration pipe (2100) and configured to discharge condensate generated from the exhaust gas may be designed in the exhaust gas concentration pipe (2100). The condensate discharge unit (2300) effectively discharges condensate generated from the exhaust gas and includes a valve. The condensate discharged from the condensate discharge unit (2300) is collected through a condensate pipe (2400).

[0082] As described above, the exhaust gas distribution device (1000) is responsible for evenly delivering the exhaust gas transmitted upward from the exhaust gas concentration pipe (2100) to the heat exchange device (3100).

[0083] The heat exchange device (3100) is located at the top of the exhaust gas distribution device (1000) and performs heat exchange by coming into contact with the exhaust gas. The heat exchange device (3100) receives a heat exchange medium to be heat exchanged through an external supply pipe (3200) and discharges the heat-exchanged heat medium to the outside. Meanwhile, an upper cap (3300) may be placed at the top of the heat exchange unit (3100).

[0084]

[0085] Although the embodiments described above have been described with limited drawings, those skilled in the art will appreciate that various technical modifications and variations can be applied based on the above. For example, appropriate results can be achieved even if the described techniques are performed in a different order than described, and / or components of the described systems, structures, devices, circuits, etc. are combined or combined in a different manner than described, or are replaced or substituted with other components or equivalents. Therefore, other implementations, other embodiments, and equivalents of the claims also fall within the scope of the claims described below.

[0086] The present invention relates to an exhaust gas distribution device capable of maximizing heat exchange efficiency by bringing uniform exhaust gas into contact with a heat exchanger, and a heat exchange system including the same, thereby enabling a heat exchange system capable of recovering heat more efficiently to be constructed.

Claims

1. A lower distribution unit (100) including a plurality of guide plates (110) arranged radially and uniformly distributing exhaust gas supplied from the lower portion and guiding it in a specific direction; An upper diffuser part (200) including a link rod (230) positioned on the lower distribution part (100) and connected to the lower distribution part (100), a diffuser body part (220), and guide vanes (210) radially arranged on the lower surface of the diffuser body part (220); and It includes a housing part (300) that mounts the lower distribution part (100) and the upper diffuser part (200), An exhaust gas distribution device (1000) characterized in that the housing part (300) includes a cylindrical housing body part (310) and a flared lip (320) positioned at the upper end of the housing body part (310) and having a shape that is bent outward and widened to guide the flow of exhaust gas in a direction of expanding the flow of exhaust gas; and a flange (330) protruding from the side of the housing body part (310).

2. In paragraph 1, An exhaust gas distribution device (1000), characterized in that the guide plate (110) of the lower distribution unit (100) includes a main plate (111) and a camber plate (112) integrally formed on the upper part of the main plate (111).

3. In paragraph 1, An exhaust gas distribution device (1000) characterized in that the lower distribution unit (100) further includes a hub unit (120) that mechanically connects and supports the link rod (230) of the upper diffuser unit (200).

4. In paragraph 3, An exhaust gas distribution device (1000) characterized in that the position at which the link load (230) is fixed from the hub portion (120) is adjusted so that the fixed interval between the lower distribution portion (100) and the upper diffuser portion (200) is adjusted.

5. In paragraph 1, An exhaust gas distribution device (1000) characterized in that the guide plate (110) becomes narrower as it goes upward.

6. In paragraph 5, An exhaust gas distribution device (1000) characterized in that the above guide plate (110) is cut out according to the shape of the upper diffuser part (200) to secure a flow path when the exhaust gas rises.

7. In paragraph 1, An exhaust gas distribution device (1000) characterized in that the above guide plates (110) and the above guide vanes (210) are included in the same number and are arranged alternately at the same angular intervals when viewed on a plane.

8. In paragraph 2, An exhaust gas distribution device (1000) characterized in that the above guide vane (210) is formed into a curve by bending the camber plate (112) in an inclined direction from the center.

9. A fuel cell module (SOFC) that emits exhaust gas through a reaction during power generation; An exhaust gas concentrator (2100) that concentrates the exhaust gas through an exhaust gas discharge pipe (2200) connected to the above fuel cell module (SOFC); An exhaust gas distribution device (1000) located at the upper portion of the exhaust gas concentration pipe (2100) and distributing the exhaust gas and delivering it upward; and A heat exchange device (3100) located at the top of the exhaust gas distribution device (1000) and exchanging heat by contacting the exhaust gas; The above exhaust gas distribution device (1000) is A lower distribution section (100) including a plurality of guide plates (110) arranged radially and uniformly distributing exhaust gas supplied from the lower section and guiding it in a specific direction; An upper diffuser part (200) including a link rod (230) positioned on the lower distribution part (100) and connected to the lower distribution part (100), a diffuser body part (220), and guide vanes (210) radially arranged on the lower surface of the diffuser body part (220); and It includes a housing part (300) that mounts the lower distribution part (100) and the upper diffuser part (200), The guide plate (110) of the lower distribution unit (100) includes a main plate (111) and a camber plate (112) integrally formed on the upper side of the main plate (111). A heat exchange system characterized in that the guide vane (210) is formed as a curve by bending the cambered plate (112) in an inclined direction from the center.

10. In paragraph 9, A heat exchange system characterized by further including a condensate discharge section (2300) connected to the exhaust gas concentration pipe (2100) and discharging condensate generated from the exhaust gas.

11. In paragraph 9, A heat exchange system characterized by having an upper cap (3300) disposed on the upper part of the heat exchange device (3100).

12. In paragraph 9, The lower distribution section (100) further includes a hub section (120) that mechanically connects to and supports the link rod (230) of the upper diffuser section (200). A heat exchange system characterized in that the position of the link rod (230) fixed from the hub (120) is adjusted so that the fixing distance between the lower distribution section (100) and the upper diffuser section (200) is adjusted.

Images